well i dont think they are suppose to be perfectly nice, and what not. having character flaws (and plenty of them) adds more to the character.

and if you were to stick to the show you would see more of them and your opinions of the different characters would probably improve, but whatever you gave the show a shot so not like you need to like them or anything

and no your right being nice doesnt prevent all problems from happening, but it would be an extremely annoying show if everyone was perfectly nice to eachother and there was never any conflict between any of the characters, (thats my little pony generation 3.5 show, extremely painful to watch, seen one and a half episodes of it and its nothing but tea parties and complete lack of story). thats why there is always a little personal conflict between the characters that they have to over come in order to still be friends.

like an example of this is where complete opposite personalities of Rarity (the white drama queen fashion pony) and Applejack (the orange Country girl ) were caught in a storm and were force to take shelter together in their friends twilights (purple know it all) house for the night where because of there differences were fighting the whole time till the point where they did some damage to the house and they had to put aside there minor differences in order to repair twilight's house, in turn learning to accept one another for who they are while still being polar oppisites

that i think is a much more interesting story for an episode instead of three ponies had a sleep over in a thunderstorm and had to fix a broken window